【判断题】设向量 和 ,则向量 在 上的射影为 。( )
【单选题】In America, every student in his or her second year of high school is required to take a class in driver's education. The course is divided up into two parts: class time for learning laws and regulati...
A.
is considered as part of the advanced education
B.
is given to anyone wanting to get a driver's license
C.
is carried on after students graduate from high school
D.
is offered to all the students of Grade 2 in high school
【单选题】设在直角坐标系{O;i,j,k}下,向量a=i+2j-3k,则向量a在向量i上的射影(投影)向量为( )。
【单选题】What do you call a student in his/her first year at college?
【判断题】招聘面谈前期准备中要注意明确面谈目的,设计面谈问题以及面谈的基本流程
【判断题】党的十八大明确了决胜全面建成小康社会的战略安排,指出从现在到2020年是全面建成小康社会的决胜期。
【判断题】招聘面谈前期准备中要注意明确面谈目的,设计面谈问题以及面谈的基本流程。
【单选题】利用 、渐变工具、减淡和加深工具制作口红的效果图。
【单选题】已知 , ,则向量 在 方向上设射影的数量为( )
【单选题】A student in his or her second year at college is called ( )